196377909 has 16 divisors (see below), whose sum is σ = 322261632. Its totient is φ = 103583808.

The previous prime is 196377889. The next prime is 196377919. The reversal of 196377909 is 909773691.

It is not a de Polignac number, because 196377909 - 2¹⁷ = 196246837 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196377919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 359394 + ... + 359939.

It is an arithmetic number, because the mean of its divisors is an integer number (20141352).

Almost surely, 2^196377909 is an apocalyptic number.

It is an amenable number.

196377909 is a deficient number, since it is larger than the sum of its proper divisors (125883723).

196377909 is a wasteful number, since it uses less digits than its factorization.

196377909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719356.

The product of its (nonzero) digits is 642978, while the sum is 51.

The square root of 196377909 is about 14013.4902504694. The cubic root of 196377909 is about 581.2516657138.

The spelling of 196377909 in words is "one hundred ninety-six million, three hundred seventy-seven thousand, nine hundred nine".